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[ Upstream commit44306a684c] Check for NULL return value with dma_alloc_coherent, in line with Robin's fix for vic.c in 'drm/tegra: vic: Fix DMA API misuse'. Fixes:46f226c93d("drm/tegra: Add NVDEC driver") Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20250702-nvdec-dma-error-check-v1-1-c388b402c53a@nvidia.com Signed-off-by: Sasha Levin <sashal@kernel.org>